AC208-DS04-405-R datasheet(36/58 Pages) BOARDCOM

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AC208

Preliminary Data Sheet

07/08/02

B roa dcom

Page 28 PHY Registers

Document

AC208-DS04-405-R

PHY 10BASE-T CONFIGURATION REGISTER

Table 27: PHY 10BASE-T Configuration Register

Bit

Name

Description

Mode

Default

16.15

Repeater

1 = Repeater mode. Full-duplex is inactive, and CES only

responses to receive activity. SEQ test function is also

disabled.

0 = DTE mode.

16.14

Reserved

16.13

TXJAM

1=Force CIM to send jam pattern.

0=Normal operation mode

16.12

CIM Disable

1 = Disable carrier integrity monitor function.

0 = Enable carrier integrity monitor function.

Default is ‘0’.

16.11

SEQ Test Inhibit

1 = Disable 10BASE-T SEQ testing.

0 = Enable 10BASE-T SEQ testing. Generates a COL pulse

following the completion of a packet transmission.

16.10

BASE-T Normal Loop

Back

1 = Enable 10BASE-T normal loop back.

0 = Disable 10BASE-T normal loop back.

16.[9:6]

Reserved

16:5

Auto polarity disable

1 = Disable auto polarity detection/correction.

0 = Enable auto polarity detection/correction.

16.4

Reverse Polarity

When Reg16.5 is set to 0, this bit sets to 1. If Reverse

Polarity is detected on the media, it is set to 0. When

Reg16.5 is set to 1, writing a one to the bit reverses the

polarity of the transmitter.

Note: The reverse polarity is detected either through 8

inverted NLP or through a burst of inverted FLP.

16:[3:0]

Reserved

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